Pratikakis, I.I.PratikakisVanhamel, IrisIrisVanhamelSahli, HichemHichemSahliEfraimidis, Z.Z.EfraimidisGatos, B.B.GatosPerantonis, S.S.Perantonis2021-10-152021-10-152004https://imec-publications.be/handle/20.500.12860/9463Unsupervised region-based image retrievalProceedings paper